Rotating sprinkler



Feb. 2z, 1927. 0. A. KITTINGER ROTATING SPRINKLER 2 Sheets-Sheet 2 Filed May 26, 1924 Patented .I Feb.l 1927.

OTIS A.. XITTINGEB, OF PEARL CITY, TERRITORY OFHAWII.

Borrarme srnmmn.

y Application mea Maize, 1924. serial No. 715,947.

'This invention/relates to sprinkling devices, and more" particularly to lawn sprinklers of the revolving type adapted to utilize the water pressure to throw the water,

radially of the support. Insuch devices the water is usually thrown in a circular path, the outermost limit of throw being the cirl cumference of a circle circumscribed about the axis of the support as a center, it being assumed that the rotor'l is'parallel to the space being sprinkled.

Many lawns, flower beds, gardens, etc., are of rectangular formation and, if sprinklers such as above referred to are utilized in such formations, the extreme corners of the plots will not be reached by the water, when the power is only sulicient to project the latter to the sides of the plot. If greater power is applied the corners may be reached,

but the water will be thrown beyond the.

sides of the rectangular formation, resulting in needless waste, as will be readily understood. p

The object of this invention therefore is the provision of a sprinkler of the general rotating type referred to, and adapted to distribute the water over a surface of rec-v tangular formation.

@ther objects of the Ainvention will be made apparent in the following specifications, when read in connection with the accompanying drawings.

In said drawings;

Fig. 1 is a fragmentary vertical section taken through my improved revolving sprinkler, showing the device in operation.

Fig. 2 is a fragmentary top plan view of the sprinkler on the line 2-2 of Fig. 1.

Fig. 3 is a diagrammatic top plan view of the sprinkler in operation, the arrows indicating the maz'u'mum and minimum throw of the water. Y

-Fig.'4 is a schematic detail illustrating the valve control which regulates the distance of the water throw, and,

' Fig. 5 is a side elevation of my sprinklermounted `for operation, and, f

Fig. 6 is a section taken longitudinally of the nozzle of a sprinkler arm.

Now referring specifically to the drawing A, Fig. 1, is a supply pipe adapted to deliver water under pressure, said pipe being-mounted upon a standard A, the lower .and being in communication with a h ose A", er otherwise connected to the water supply, Vsec Fig. 5.

- non-rotatively secure To the top of the dpipe A is rigidly and a reservoir 1, having a depending peripheral ange 1, said reservolr being provided at its top with a central a erture to receive the end of the pipe AJ T e top periphery of thepipe A extends into said aperture, and maybe rigidly secured thereto by screw-threads, as shown in Fig. 1.-- A plug 2 extends into the a erture -1n the reservoir, closing the en of' the pipe A, and may be rigidly secured in position by a screw-threaded. connection, as illustrated. The plug 2 is provided with a conically shaped top 3.

' Concentrically mounted with respect to the reservoir 1, and slightly spaced therefrom,` is a -revolvable shell 4, having a de` pending peripheral flange 4, and carryinga czp 5 at its axial center, said cap bemg a apted to fit over the plug 2, and providing a socket adapted to the vtop 3 of said plug. The ca maybe screwed into the shell 4 as indicate in Fig.- 1, or may otherwise be secured thereto, as will be understood. The lower plate 6 of the shell is centrally provided with an annular downturnedv flange 6', to which is rigidly secured a ring 62, resting upon the male portion 7 of a stuing box, which portion closely fits around the water supply pipe A, the outer periphery of thet portion 7 being screw-threaded for connection' to the complementary portion 8 of the stuing box.` The ring 62 is in the form of afraceway for anti-friction members 9, -which rest thereupon, surroundin the pipe A, and said members are held a ainst lateral movement by an enclosing ring 9', another ring 92 being soldered to the. ipe A, and limiting upward movement of t e members 9.

The to of the pipe A, within the shell 4,

is provi with four equally-spaced slots 10, Fig. 2, which extendthrough the wall of Ythepipe at an an le to the longitudinal axis of e latter. pon the upper surface of the bottom pla 6 of the shell 4, is soldered The vertically extending flange 4a of the shell 4 is provided two sets of hollow sprinkling arms, 12, 12 and 13, 13, each arm being screw-threaded into an aperture through said flange, and the two arms l2 and 12 being diametrically opposite, each to each, as are also` the arms 13 and 13, all as shown in Fig. 2. The arms 12 and 13 are slightly curved to assist in the rotation of the shell 4, and are provided at their outcrcuds with a nozzle 14, having four or more orifices ai'- ranged in a row, said orifices 15, 15', 152. 153 being arranged as shown in Fig. 6. Each arm 12 is s aced from the adjacent arm 13 a distance wiiich is approximately one-eighth of the circumference of the vertical flange 4 of the shell 4. f

The fixed reservoir 1 is provided with a vertically extending circumferential flange 1, and four equally-spaced, circumferentiallyelongated openings or, vents 16, are cut through the wall of the flange 1, and extend longitudinally of the circumference ot' said flange, as clearly shown in Figs. 1 and 4. The openings 16 are so formed that the defining walls thereof gradually diverge circuin'leren tially of the shell, the minimum divergence being at each end and gradually increasing to maximum at the center. Such openings or vents 16 permit access, to the arms 12 and 13, of the water otherwise confined in the reservoir 1. Each of the vents 16 are of a longitudinal dimension equal to approximately three-sixteenths of the circumference of the flange l, and the greatest height, at center, about 3/8 of an inch. These dimensions may obviously be varied to meet the requirements however.

In the operation oi. the device as so far described, the water under pressure, from the pipe A, enters the reservoir 1 through the slots 10, strikes the blades 11, and initiates rotation of the shell 4, at the same time raising the shell 4 so that the top 3 of the plug 2 enters the socket in the cap 5, and the balls 9, are lifted by the ring 62 and engage the ring 92. 4If it were not for the provision of the vents 16, the water would remain under pressure, in the reservoir 1, but revolution of the shell 4 successively brings the open ends of the arms 12 and 13 into register with the' vents 16, and the water under pressure passes between the flange 1a of the reservoir 1, and theilange 4a of the shell 4 and into said arms, subject to such pressure, which ejects it through the orifices 15, 15',

15z 153 ro'ectin Vthe water through said' i P J g s orifices a distance which is directly proportionate to the amount of pressure upon the water in the arms. Manifestly the amount of water in each arm governs the pressuie therein, and the volume of water allowed to enter each arm is dependent upon the extent `to which the inner orreceiving end of each arm is in register with a vent 16. 4

In Fig. 4 is a schematiesliowing of the receiving end o'f an arm passing across a. vent 16. Before 'the arms comes into register with the vent the pressure in the arm is zero; as the very acute end of the vent registers with the segment of'the receiving end of the arm, i

the water evenly within the confines of ya.

rectangular formation, as indicated in Fig. 3, the arrows indicating the minimum and maximum throw of the water. It isl of course to be understood that the space to be `covered is many times larger, in proportion to the spread of the arms, than is illustrated in Fig. 3.

In Fig. 3 the vents 16 are shown as spaced apart by the black portions of the flange 1, the vents being so positioned that the arms 12 and 13 will rotatively present their receiving ends at the center of the vents, at the instant when the curvature ot the arindirects the nozzle 14 directly towards the extreme corner a, of the rectangle. As the arm passes to the right towards the point y, which is at the center of the side of the rectangle, the throw of the water gradually diminishes, because the volume of water entering the arm is gradually cut olf, and the pressure upon the orifice 15 is gradually vdiminished, resulting in a minimum throw to the point i/, immediately prior to the moment that the receiving end of the arm passes out of register willi the vent 16, to zero pressure. Because of the curvature of the arm at the right. of the arm ust referred to, and because of the formation and disposition of the vents 16, one arm approaches its point of minimum throw as the adjacent arm approaches its point of maximum throw, and, conversely, when one arm is at maximum, the other is`at zero, the second arm coming into operation at minimum however,at the front end of one vent 16, as the other approaches minimum at the rear end of the adjacent vent. In order to impart an additional impulse to the water which is directed at the extreme corner :I: of the rectangle, I provide a cut-out portion 16 at the top and bottom central portions of the vents 16.

Since the space between the flange 1n of the reservoir 1, andthe flange 4 of the shell 4,*is always filled with water under pressure, the water is at no time completely cut off from the arms 12 and 13, and the words zero, minimum and maximum as above used, areI to be understood indicate the. varying supplies of. water which passes dnect y to the arms from the vents 16. Before the ventsv are in registration with the arms this course zero; when t registers, the quantity' is minimum, thence uantty of water is of gradually increasing to maximum at the -po1nt 16 of-thevent,thence 'gradually de- .-creasmg to minimum as the rear'apex of the vent is approached, and then to zero, as the arm passes out .of registration with the vent.

In Fig. 3 it will be notedlthat the receivmgend'of the arm 13, at the bottom of the figure is just about to pass out of registration-with the -vent 16, andjit is .therefore maklnfg its direct-throw to a point just to the left o the point y. Upon further passage ofthe arm tothe right, the direct 'throw the lange 4, on the shell 4. Upon still further passage of 'thefarm to the rlght, the recelving end of the arm passes into registration with the nextvent 16, and the direct throw'of water is resumed. It is to be I'noted therefore that the area covered by the indirect throw spans the l.space` left unsprinkled by the direct throw,or lthat the indirect throw7 is effective to cover' the space not touched by the direct flow during the period which ensues while the'receiving ends of the-arms are passing from registration 35 arm, 1

smaller.' and' throws vertically, while the "smallest" oriicei1 5 directs the water nback- -l wardlytowards the sprinkler. By this conigtrctioitwillf obvious that theventire ...surfafee 'of `,tl ie.irectangular formation may:

betcovered'whilelall the arms are revolvinv.

. "gffModicationsof the structure herein 'dis -olosed,"'sucl1a's vents or an ,thigty-but my invention covers asians? e apex of a vent Arstl with one vent into registration with the" 'j next vent. ',From theforegoing thereforel' itis obvious. that 'them-ms may sprinkle in f a 'stra' l* arms'of various consuggested to. those odilntfalling fairly within ,the

`voir in communication with a supply of water under pressure, a circular shell rotatably mounted concentrically of and adjacent the outer side of said reservoir to form a restrcted well, a' plurality of sprinkler arms coirimunicating with said shell, and' a plu#- rality of circumferentially elongated apertures extending through the wall deining saidreservoir, each of said apertures gradA ually increasing in width' from each yend towards its center, substantially as described;y 1, i

2.- A vsprinkler comprising a circular reservoir in communication with a supply of water under pressure, ,a circular shell spaced from said reservoir and rotatable concentrically therewith and adjacent thereto to form a restrictedwell, a plurality of sprinkler arms arranged in pairs in communica- Ation with said shell, and a plurality of circumferentially elongated apertures extending through the wall of said reservoir, each of lsaid apertures gradually increasing in width from each end toward its center.

3. A rotating sprinkler comprising a circular reservoir adapted to .receive water under pressure, a rotatable shell mounted ou t -side of and` adjacent and encircling said reservoir-to form a restricted well, sprinkler arms extending through the wall of said shell, a circumferentially-elongated opening extending throughe'each quadrant ofIl the circular wall defining" said reservoir, each opening dimming-.from each end towards its -center and permitting the passage of from minimum to maximum and thence to minimum, wherebythe sprinkler may throw stantially as described;

i sf-Arotary sprinkler comprising a sup- PQ'?, gcircularjreservor lixedv thereto and inf]communicatonfwith water under'- pressure, a shellspacedifffrom and concentric with reservoir being-provided around its perl h ery witha' plurality of clrcumferentra yelongated openings each divergmg I each end :idward its center, and under rota tion of the shelhheng adapted to register with an 'and to. deliver water thereto 1n 'quantities gradually varying from mmlmum to maximum-and thence gradually .decreasing frommammuin-'to' nimum, during the passag'eof said armv. oss` said openmg, substantiallyrasj vd. and for the purposes tatable adjacent thereto `Water to. said arms' Ain quantities varying :fwate over a .rect o'ular formation subs :provlded with a rowk r an from 

